Evidence map›Paper›PMID 37938636›Full record

ArticleISME communications2021

Genetically modifying skin microbe to produce violacein and augmenting microbiome did not defend Panamanian golden frogs from disease.

Matthew H Becker, Jennifer A N Brophy, Kevin Barrett, Ed Bronikowski, Matthew Evans, Emerson Glassey, Alyssa W Kaganer, Blake Klocke, Elliot Lassiter, Adam J Meyer and 4 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in ISME communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.0field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Probiotic colonization ofInfection and immunity · 2025
    Article
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  7. Identification and characterization ofMicrobiology spectrum · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 3 institutions in 1 country.

Matthew H BeckerSmithsonian's National Zoo and Conservation Biology Institute, Center for Species Survival, Front Royal, VA, USA.
Jennifer A N BrophySynthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.ORCID http://orcid.org/0000-0001-7808-4281
Kevin BarrettMaryland Zoo in Baltimore, Baltimore, MD, USA.
Ed BronikowskiSmithsonian's National Zoo and Conservation Biology Institute Reptile Discovery Center, Washington, DC, USA.
Matthew EvansSmithsonian's National Zoo and Conservation Biology Institute Reptile Discovery Center, Washington, DC, USA.
Emerson GlasseySynthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
Alyssa W KaganerSmithsonian's National Zoo and Conservation Biology Institute, Center for Species Survival, Front Royal, VA, USA.
Blake KlockeSmithsonian's National Zoo and Conservation Biology Institute, Center for Species Survival, Front Royal, VA, USA.
Elliot LassiterSmithsonian's National Zoo and Conservation Biology Institute Reptile Discovery Center, Washington, DC, USA.
Adam J MeyerSynthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
Carly R Muletz-WolzSmithsonian's National Zoo and Conservation Biology Institute, Center for Conservation Genetics, Washington, DC, 20001, USA.
Robert C FleischerSmithsonian's National Zoo and Conservation Biology Institute, Center for Conservation Genetics, Washington, DC, 20001, USA.
Christopher A VoigtSynthetic Biology Center, Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
Brian GratwickeSmithsonian's National Zoo and Conservation Biology Institute, Center for Species Survival, Front Royal, VA, USA. gratwickeb@si.edu.ORCID http://orcid.org/0000-0002-7332-4060
Smithsonian Conservation Biology Institute · USMassachusetts Institute of Technology · USGeorge Mason University · US

Funding

Department of the Interior | U.S. Fish and Wildlife Service (U.S. Fish & Wildlife Service) F14AP00750United States Department of Defense | Defense Advanced Research Projects Agency (DARPA) HR0011-15-2-0033
6 · The paper itself

Abstract

We designed two probiotic treatments to control chytridiomycosis caused by Batrachochytrium dendrobatidis (Bd) on infected Panamanian golden frogs (Atelopus zeteki), a species that is thought to be extinct in the wild due to Bd. The first approach disrupted the existing skin microbe community with antibiotics then exposed the frogs to a core golden frog skin microbe (Diaphorobacter sp.) that we genetically modified to produce high titers of violacein, a known antifungal compound. One day following probiotic treatment, the engineered Diaphorobacter and the violacein-producing pathway could be detected on the frogs but the treatment failed to improve frog survival when exposed to Bd. The second approach exposed frogs to the genetically modified bacterium mixed into a consortium with six other known anti-Bd bacteria isolated from captive A. zeteki, with no preliminary antibiotic treatment. The consortium treatment increased the frequency and abundance of three probiotic isolates (Janthinobacterium, Chryseobacterium, and Stenotrophomonas) and these persisted on the skin 4 weeks after probiotic treatment. There was a temporary increase in the frequency and abundance of three other probiotics isolates (Masillia, Serratia, and Pseudomonas) and the engineered Diaphorobacter isolate, but they subsequently disappeared from the skin. This treatment also failed to reduce frog mortality upon exposure.

Identifiers

PMID37938636
PMCPMC9723765
OpenAlexW3205082655

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.